CN102428666A - Transmission device and transmission method - Google Patents
Transmission device and transmission method Download PDFInfo
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- CN102428666A CN102428666A CN2010800179280A CN201080017928A CN102428666A CN 102428666 A CN102428666 A CN 102428666A CN 2010800179280 A CN2010800179280 A CN 2010800179280A CN 201080017928 A CN201080017928 A CN 201080017928A CN 102428666 A CN102428666 A CN 102428666A
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- cqi
- order bit
- interval
- transmission
- dispensing device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A transmission device capable of reducing the information amount of channel quality indicators (CQIs) without deteriorating throughput. In the device, an upper bit transmission control unit (104) sets the transmission intervals between upper bits of the CQIs inputted from an S/P conversion unit (103) to be longer than the transmission intervals between lower bits of the CQIs, and a lower bit transmission control unit (105) sets the transmission intervals between the lower bits of the CQIs inputted from the S/P conversion unit (103). Then, a transmission unit (107) transmits the CQI on the basis of the transmission intervals respectively set by the upper bit transmission control unit (104) and the lower bit transmission control unit (105).
Description
Technical field
The present invention relates to dispensing device and sending method.
Background technology
At present; At 3GPP (3rd Generation Partnership Project; Third generation partner program) in the standard; Studying from dispensing device (for example communication terminal) and sending transmission rate request as the control signal of the setting that is used for asking transmission rate with signal (is CQI (Channel Quality Indicator, CQI) in the 3GPP standard) to receiving system (for example base station apparatus).Receiving system is selected transmission rate according to the CQI that receives.
As in the past the sending method of transmission rate request with signal; Have the decision of predetermined fixed ground to send the delivery time of transmission rate request with signal, dispensing device sends the method (for example with reference to non-patent literature 1) of transmission rate request with whole bits of signal under the situation that arrives delivery time.
The prior art document
Non-patent literature
Non-patent literature 1:3GPP TS25.214, section 6A.1.2
Summary of the invention
The problem that invention will solve
But, in above-mentioned technology in the past, existing from the circuit of dispensing device to receiving system, the transmission rate request is with the many problems of the information quantitative change of signal.After the information quantitative change how of transmission rate request with signal, in dispensing device, be used for the power consumption increase of transmission rate request with the transmission of signal.And then after the information quantitative change how of transmission rate request with signal, the transmission rate request is big to the interference quantitative change that other-end produces with signal.
Therefore,, consider in dispensing device, make the transmission rate request longer at interval with the transmission of the fixing delivery time of setting of signal in order to reduce the amount of information of transmission rate request with signal.But, line conditions change constantly.Therefore, make the transmission rate request long more at interval with the transmission of signal, then in receiving system, the possibility that produces error between the line conditions when existing the request of reception transmission rate with signal and the actual track situation of current time is big more.That is, the transmission rate request is with the deterioration in accuracy of signal.That is, though reduced the amount of information of transmission rate request with signal, receiving system can't be selected suitable transmission rate to dispensing device, exists the possibility that throughput reduces.
Like this, the transmission rate request is with the relation that exists compromise (tradeoff) between the minimizing degree of the amount of information of signal and the throughput.
The objective of the invention is to, provide and not reduce throughput and reduce dispensing device and the sending method of transmission rate request with the amount of information of signal.
The scheme of dealing with problems
The structure that dispensing device of the present invention adopts comprises: control unit, send the 1st of the high order bit of control signal and set to such an extent that send long at interval than the 2nd of the low-order bit of said control signal at interval; And transmitting element, send at interval based on said the 1st transmission interval of setting and the said the 2nd, send said control signal.
Sending method of the present invention comprises: the 1st of the high order bit of control signal is sent set to such an extent that send long at interval than the 2nd of the low-order bit of said control signal at interval; And, send said control signal based on said the 1st transmission interval of setting and said the 2nd transmission interval.
The effect of invention
According to the present invention, can not reduce throughput and reduce the amount of information of transmission rate request with signal.
Description of drawings
Fig. 1 is the block diagram of structure of the dispensing device of expression embodiment of the present invention 1.
Fig. 2 is the figure that the transmission of the CQI of expression embodiment of the present invention 1 is handled.
Fig. 3 is the block diagram of structure of the dispensing device of expression embodiment of the present invention 2.
Fig. 4 is the figure that the transmission of the CQI of expression embodiment of the present invention 2 is handled.
Fig. 5 is the figure of the sub carrier groups (subcarrier group) of expression embodiment of the present invention 2.
Fig. 6 is the block diagram of structure of the dispensing device of expression embodiment of the present invention 3.
Fig. 7 is the figure that the transmission of the CQI of expression embodiment of the present invention 3 is handled.
Fig. 8 is the block diagram of structure of the dispensing device of expression embodiment of the present invention 4.
Fig. 9 is the figure that expression other the transmission of CQI of the present invention is handled.
Label declaration
100,200,300,400 dispensing devices
101 coded/modulated unit
102 CQI generation units
103 S/P converting units
104,202,302,402 high order bit sending controling units
105,303 low-order bit sending controling units
106 P/S converting units
107 transmitting elements
108 antennas
201 line quality information generation units
203 delivery time information generating unit
301 timing generation units
401 identifying units
Embodiment
Below, with reference to accompanying drawing execution mode of the present invention is described at length.In addition, in following explanation, the transmission rate request is made as CQI with signal.
(execution mode 1)
Fig. 1 representes the structure of the dispensing device of this execution mode.In dispensing device shown in Figure 1 100, encoding process and modulation treatment are implemented for sending signal in coded/modulated unit 101.And the transmission signal after coded/modulated unit 101 will be modulated outputs to P/S (parallel/serial) converting unit 106.
S/P converting unit 103 will convert into parallel from the CQI of CQI generation unit 102 serials input.In addition, S/P converting unit 103 will convert parallel CQI into and be separated into high order bit and low-order bit.And S/P converting unit 103 outputs to high order bit sending controling unit 104 with the high order bit of CQI, and the low-order bit of CQI is outputed to low-order bit sending controling unit 105.
High order bit sending controling unit 104 and low-order bit sending controling unit 105 have the function as the sending controling unit of the delivery time of decision CQI.104 decisions of high order bit sending controling unit are from the delivery time of the high order bit of the CQI of S/P converting unit 103 inputs.Here, high order bit sending controling unit 104 with the transmission of the high order bit of CQI set at interval than by after the transmission of low-order bit of the CQI that sets of the low-order bit sending controling unit stated 105 long at interval.And high order bit sending controling unit 104 outputs to P/S converting unit 106 with the high order bit of CQI based on the transmission of setting at interval.
105 decisions of low-order bit sending controling unit are from the delivery time of the low-order bit of the CQI of S/P converting unit 103 inputs.Here, low-order bit sending controling unit 105 is set the transmission interval of the low-order bit of CQI.And low-order bit sending controling unit 105 outputs to P/S converting unit 106 with the low-order bit of CQI based on the transmission of setting at interval.
P/S converting unit 106 will be from the high order bit of the high order bit sending controling unit 104 parallel CQI that import, and perhaps the low-order bit from the low-order bit sending controling unit 105 parallel CQI that import converts serial into.And P/S converting unit 106 generates the signal of 1 system that the low-order bit by the high order bit of the transmission signal of 101 inputs from the coded/modulated unit and CQI or CQI constitutes.And P/S converting unit 106 outputs to transmitting element 107 with the signal that generates.
Transmitting element 107 is handled for implementing to send from the signal (that is, comprising the signal that sends signal and CQI) of P/S converting unit 106 inputs, and the signal that will send after handling sends via antenna 108.Thus, based on the transmission of setting respectively by high order bit sending controling unit 104 and low-order bit sending controling unit 105 at interval, send high order bit and the low-order bit of CQI respectively.
Then, specify the high order bit sending controling unit 104 of dispensing device 100 and the transmission control and treatment in the low-order bit sending controling unit 105.
The represented value of CQI changes according to line conditions.In addition, the high order bit in a plurality of bits of expression CQI is high more, and the value that can represent is big more.That is, compare with the low-order bit variation of CQI, when the high order bit of CQI changed, the variation of the value that CQI representes was bigger.Therefore, generally speaking, CQI is big from the possibility that low-order bit begins to change successively.That is, in a plurality of bits of expression CQI, low-order bit is low more, and it is worth easier change according to line conditions (circuit change) and changes continually.That is, the high order bit of CQI is high more, and its value is difficult more to be changed continually.
That is,, also can notify correct CQI for receiving system even the transmission of high order bit that dispensing device 100 for the transmission of the low-order bit that sends its CQI that is worth easy frequent variations at interval, makes the transmission value be difficult for the CQI of frequent variations extends at interval.In other words, for the transmission frequency of the low-order bit that sends CQI, dispensing device 100 also can reduce the transmission frequency of the high order bit that sends CQI.
Therefore, the high order bit sending controling unit 104 of dispensing device 100 is set the transmission of the high order bit of CQI longer at interval than the transmission of the low-order bit of CQI at interval.In other words, the low-order bit sending controling unit 105 of dispensing device 100 is set the transmission of the low-order bit of CQI shorter at interval than the transmission of the high order bit of CQI at interval.
Below, describe particularly.In following explanation, the bit number of CQI is made as 5 bits.In addition, S/P converting unit 103 outputs to high order bit sending controling unit 104 with 3 bits of the high position among the CQI of 5 bits, and low level 2 bits are outputed to low-order bit sending controling unit 105.
In addition,, suppose that the value of CQI is bigger (perhaps the value of CQI is more little) here, then the value of the transmission rate of request is big more.For example, CQI=" 00000 " (perhaps " 11111 ") is corresponding to minimum transmission rate, and CQI=" 11111 " (perhaps " 00000 ") is corresponding to the highest transmission rate.That is, CQI=" 00000 " to " 11111 " (perhaps CQI=" 11111 " is to " 00000 ") with from minimum transmission rate order associated in correspondence from small to large.
As shown in Figure 2, low-order bit sending controling unit 105 is set at time interval n at interval with the transmission of low level 2 bits of CQI.That is, as shown in Figure 2, low-order bit sending controling unit 105 constantly n, 2n, 3n, 4n ... determine delivery time into low level 2 bits of CQI.
Relative therewith, as shown in Figure 2, high order bit sending controling unit 104 is set at time interval 2n at interval with the transmission of a high position 3 bits of CQI.That is, as shown in Figure 2, high order bit sending controling unit 104 constantly n, 3n ... determine delivery time into a high position 3 bits of CQI.
Like this, high order bit sending controling unit 104 is set the transmission of the high order bit of CQI longer at interval than the transmission of the low-order bit of CQI at interval.Particularly, as shown in Figure 2, high order bit sending controling unit 104 is set at the transmission of a high position 3 bits of CQI the transmission twice at interval of low level 2 bits of CQI at interval.In other words, high order bit sending controling unit 104 makes the transmission frequency of high order bit of CQI lower than the transmission frequency of the low-order bit of CQI.For example, in the time interval 2n of moment n～moment 3n shown in Figure 2, low level 2 bits of CQI send twice, and relative therewith, a high position 3 bits of CQI only send once, lack than the transmission number of times of low level 2 bits.
Therefore, as shown in Figure 2, at moment n, send a high position 3 bits and low level 2 bits of CQI#n, promptly whole bits of CQI#n at moment 2n, only send low level 2 bits of CQI#2n.Equally, at moment 3n, send a high position 3 bits and low level 2 bits of CQI# 3n, promptly whole bits of CQI# 3n at moment 4n, only send low level 2 bits of CQI# 4n.
As stated, high order bit is high more in a plurality of bits of CQI, and its value is difficult more to be changed continually.That is, the high order bit of CQI is high more, and the variation of the value of circuit change is slow more.For example, the possibility of value variation is high down at time interval n (for example constantly between n and the moment 2n) for low level 2 bits of CQI shown in Figure 2.Relative therewith; Although a high position 3 bits that have a CQI shown in Figure 2 are in time interval 2n (for example n with constantly between the 3n) the constantly possibility that changes of value down, the possibility that value changes under time interval n (for example n with constantly between the 2n or between moment 2n and the moment 3n) constantly is low.
Therefore; Even (even the transmission frequency of the high order bit of CQI is lower than the transmission frequency of the low-order bit of CQI) grown at interval than the transmission of the low-order bit (being low level 2 bits) of CQI in the transmission of the high order bit of CQI (being a high position 3 bits of CQI in Fig. 2) interval in Fig. 2; The receiving system that receives the CQI that sends from dispensing device 100, the precision of the CQI that uses at each delivery time of CQI is deterioration not also.For example; In Fig. 2; At the moment 2n of a high position of not sending CQI 3 bits,, also can correctly select transmission rate even receiving system adopts the CQI of 5 bits that low level 2 bits of the CQI#2n that receives by a high position 3 bits of the CQI#n that receives at moment n with at moment 2n constitute.Promptly; Even (even the transmission frequency of the high order bit of CQI is lower than the transmission frequency of the low-order bit of CQI) grown at interval than the transmission of the low-order bit of CQI in the transmission of the high order bit of CQI interval; The whole precision of CQI also is difficult for deterioration, so the possibility that throughput reduces is low.
Like this, in this execution mode, dispensing device is set the transmission of the high order bit of CQI (being that signal is used in the transmission rate request) longer at interval than the transmission of low-order bit at interval.Thus, dispensing device can reduce the amount of information of CQI the low amount of transmission frequency of the transmission frequency ratio low-order bit of the high order bit that is equivalent to CQI.In addition, in receiving system, the reception of the high order bit of CQI is longer at interval than the reception of low-order bit at interval.But, because the value of the high order bit of CQI is difficult for changing, so receiving system can suitably be selected transmission rate through the CQI that the high order bit that for example uses by the CQI that received last time constitutes.Promptly; Make at dispensing device CQI high order bit transmission at interval than under the long at interval situation of the transmission of the low-order bit of CQI (promptly; The transmission frequency of the high order bit of CQI than the low situation of the transmission frequency of the low-order bit of CQI under), the reduction that also can not produce throughput.Therefore, according to this execution mode, can not reduce throughput and reduce the amount of information of CQI.That is,, through reducing the amount of information of CQI, thereby the power consumption of CQI can be reduced, and the interference volume that produces by CQI can be reduced other-end according to this execution mode.
In addition, according to this execution mode, dispensing device can only be controlled the transmission interval (transmission frequency) of high order bit and the low-order bit of CQI through the form that does not change CQI, reduces the amount of information of CQI.
In addition, in this execution mode, explained that CQI representes with 5 bits, dispensing device is the situation of high-order 3 bits and low level 2 bits with 5 bit separation.But in the present invention, the bit number of expression CQI is not limited to 5 bits.In addition, each bit number of the high order bit of CQI and low-order bit is not limited to 3 bits and 2 bits.For example, representing with 5 bits under the situation of CQI, can be that high order bit is 2 bits, and low-order bit is 3 bits, perhaps also can be that high order bit is 4 bits, and low-order bit is 1 bit.
In addition, in this execution mode, the transmission that the high order bit of CQI has been described is spaced apart the situation of transmission twice at interval of the low-order bit of CQI.But in the present invention, the transmission of the high order bit of CQI is not limited to the transmission twice at interval of the low-order bit of CQI at interval, and for example, the transmission of the high order bit of CQI also can be at interval 3 times or 4 times of transmission of the low-order bit of CQI at interval.That is, as long as the transmission of the high order bit of CQI interval is longer at interval than the transmission of the low-order bit of CQI.
In addition, in this execution mode, explained that dispensing device will represent that a plurality of bits of CQI are divided into the situation of two kinds of high order bit and low-order bit.But in the present invention, the number of a plurality of bits of expression CQI being cut apart gained is not limited to two kinds, also can be divided into more than three kinds.For example; Carry out under 3 situation about cutting apart at the CQI that will represent with 5 bits; Dispensing device can be to send 1 bit of n transmission lowest order at interval, and 2n sends 2 bits from lowest order the 2nd bit and the 3rd bit to send at interval, and send high-order 2 bits to send interval 4n.
(execution mode 2)
In this execution mode, dispensing device is set the transmission interval of the high order bit of CQI changeably.
Fig. 3 representes the structure of the dispensing device 200 in this execution mode.In Fig. 3, to the structure additional phase identical label and omission explanation together with execution mode 1 (Fig. 1).
In dispensing device shown in Figure 3 200, line quality information generation unit 201 generates the line quality information of expression circuit change speed based on the line quality between this device and the receiving system (line quality that is for example estimated by not shown estimation unit).Here, circuit change speed is for example calculated based on the variable quantity of the estimated result of line quality.And line quality information generation unit 201 outputs to high order bit sending controling unit 202 with the line quality information that generates.
High order bit sending controling unit 202 determines the delivery time of the high order bit of CQI based on the line quality information from 201 inputs of line quality information generation unit.Particularly, high order bit sending controling unit 202 changes speed according to the represented circuit of line quality information, sets the transmission interval of the high order bit of CQI changeably.For example, circuit change speed faster (circuit change Shaoxing opera is strong), high order bit sending controling unit 202 is set the transmission of the high order bit of CQI short more at interval.But same with execution mode 1, high order bit sending controling unit 202 is set the transmission of the high order bit of CQI longer at interval than the transmission of the low-order bit of CQI at interval.And high order bit sending controling unit 202 outputs to P/S converting unit 106 with the high order bit of CQI based on the transmission of setting at interval.In addition, high order bit sending controling unit 202 outputs to the information of delivery time that the moment of P/S converting unit 106, i.e. expression send the high order bit of CQI with the high order bit of CQI and outputs to delivery time information generating unit 203.
Delivery time information generating unit 203 is based on the information from the expression delivery time of high order bit sending controling unit 202 input, generates the delivery time information whether each delivery time of being illustrated in CQI sends the high order bit of CQI.For example, delivery time information generating unit 203 generates 1 bit (0 or 1) as delivery time information, and said 1 bit is used to represent to have or not the high order bit that sends CQI.And delivery time information generating unit 203 outputs to P/S converting unit 106 with the delivery time information that generates.
P/S converting unit 106 generates by the low-order bit of high order bit that sends signal, CQI or CQI and from the signal of 1 system that the delivery time information of delivery time information generating unit 203 inputs constitutes.Thus, transmitting element 107 will comprise expression and whether send the signal of delivery time information of the high order bit of CQI and send via antenna 108.
On the other hand, under the transmission of the high order bit of setting CQI through the high order bit sending controling unit 202 of dispensing device 200 changeably situation at interval, receiving system need confirm to send the moment of the high order bit of CQI.Therefore, receiving system is judged the high order bit that has or not CQI at each delivery time of CQI based on the delivery time information that comprises the signal that sends from dispensing device 200.
Then, the transmission control and treatment in the high order bit sending controling unit 202 of detailed description dispensing device 200.In following explanation, same with execution mode 1, the bit number of supposing CQI is 5 bits, is high order bit from highest order 3 bits in 5 bits, is low-order bit from lowest order 2 bits.In addition, same like Fig. 2 and shown in Figure 4 with execution mode 1, low-order bit sending controling unit 105 constantly n, 2n, 3n, 4n ... determine delivery time into low level 2 bits of CQI.That is, same with execution mode 1, the transmission of the low-order bit of CQI is made as time interval n at interval.
For example; High order bit sending controling unit 202 is in the circuit change speed of representing from the line quality information of line quality information generation unit 201 inputs (circuit change speed ratio is situation faster) under the situation more than the pre-set threshold; As shown in Figure 2, the transmission of a high position 3 bits of CQI is set at time interval 2n at interval.That is, high order bit sending controling unit 202 is set at the transmission of a high position 3 bits of CQI the transmission twice at interval of low level 2 bits of CQI at interval.
Relative therewith, high order bit sending controling unit 202 is lower than (the slow situation of circuit change speed) under the situation of pre-set threshold in circuit change speed, as shown in Figure 4, and the transmission of a high position 3 bits of CQI is set at time interval 3n at interval.That is, high order bit sending controling unit 202 is set at the transmission of a high position 3 bits of CQI at interval three times of transmission of low level 2 bits of CQI at interval.
Like this, high order bit sending controling unit 202 is according to circuit change speed, with the transmission variable spaced of a high position 3 bits of CQI be set at the arbitrary interval among time interval 2n (Fig. 2) or the time interval 3n (Fig. 4).
Here, circuit change speed faster (circuit change Shaoxing opera is strong), the possibility of CQI frequent variations is high more, so dispensing device 200 need make the transmission of high order bit of CQI shorter at interval, and the transmission frequency of increase CQI.On the other hand, circuit change speed slower (the circuit change is slow more), the possibility that CQI is difficult to change is high more.In the case, even dispensing device 200 makes the transmission of the high order bit of CQI reduce and send frequency than length at interval, receiving system also can use correct CQI to select transmission rate.
Like this, according to this execution mode, dispensing device changes speed according to circuit, sets the transmission interval of the high order bit of CQI changeably.Thus, dispensing device sends the high order bit of required CQI according to each line conditions constantly, therefore compares with execution mode 1, can further reduce the amount of information of CQI.
In addition, in this execution mode, dispensing device sends the information (delivery time information) whether expression sends the high order bit of CQI, and the amount of information increase that therefore is used for the CQI transmission is equivalent to the amount of information of delivery time information.But according to this execution mode, dispensing device also can only have or not the delivery time information of transmission for the high order bit transmission expression of CQI.That is, the required amount of information of delivery time information is merely 1 bit (" 0 " that expression has or not the high order bit that sends CQI is " 1 " perhaps) and gets final product.Therefore, the transmission of the high order bit of dispensing device through suitably setting CQI can make the amount of information of CQI reduce the performance degradation that effect causes greater than the amount of information increase of delivery time information at interval.That is, in this execution mode, the influence of the performance degradation that the amount of information increase of delivery time information causes is very little.
In addition, in this execution mode, dispensing device is only set the transmission interval of the high order bit of CQI changeably.Here, for example, the base station that possesses receiving system also uses CQI (signal is used in the transmission rate request) to carry out resource management sometimes.In the case, for example, if dispensing device makes the transmission variable spaced of whole bits of CQI, then the resource management in the base station becomes complicated.But as this execution mode, dispensing device is only set the transmission interval of the high order bit of CQI changeably, and the base station can only use the low-order bit of CQI to carry out resource management thus.That is, resource management is carried out through the low-order bit that only uses the CQI that receives in the fixing moment (sending at interval) in the base station, can prevent that thus resource management from becoming complicated.
In addition, in this execution mode, explained that dispensing device changes speed according to circuit, made the transmission of the high order bit of CQI be spaced apart the transmission twice (Fig. 2) at interval or the situation of three times (Fig. 4) of the low-order bit of CQI.But in the present invention, dispensing device is not limited to transmission twice or three times at interval of the low-order bit of CQI at interval according to the transmission of the high order bit of the CQI of circuit change speed setting, also can set value arbitrarily.
In addition; In this execution mode; Under the situation of the multi-carrier communication mode of using OFDM (Orthogonal Frequency Division Multiplexing, OFDM) communication mode etc., dispensing device (being the OFDM dispensing device) can be a plurality of sub carrier groups with a plurality of subcarrier packet also; In a plurality of sub carrier groups, only in the particular subcarriers group, set the transmission interval of the high order bit of CQI changeably.For example, as shown in Figure 5, the situation of the sub carrier groups #2 that the sub carrier groups # 1 that a plurality of subcarrier packet that subcarrier number 1～y is described constitute for the subcarrier by subcarrier number 1～m and the subcarrier by subcarrier number (m+1)～y constitute.In this case, dispensing device can only be set the transmission interval of the high order bit of CQI changeably in particular subcarriers group #2.In addition, the sub carrier groups number is not limited to 2 shown in Figure 5, can be (for example 100) sub carrier groups more than 3 with a plurality of subcarrier packet.
In addition; In this execution mode; (Multiple-Input Multiple-Output: multiple-input and multiple-output) under the situation of communication mode, dispensing device also can only be set the transmission interval of the high order bit of CQI changeably in specific antenna in a plurality of transmitting antennas using MIMO.For example, dispensing device can be according to the circuit in specific antenna change speed, sets changeably from the transmission of the high order bit of the CQI of specific antenna transmission at interval.
(execution mode 3)
In this execution mode, the sending method of the CQI when the communication beginning is described.
Fig. 6 representes the structure of the dispensing device 300 in this execution mode.In Fig. 6, to additional same numeral of the structure identical and omission explanation with execution mode 1 (Fig. 1).
Regularly generation unit 301 generates the information of the timing (the communication zero hour) of expression communication beginning.And regularly generation unit 301 outputs to high order bit sending controling unit 302 and low-order bit sending controling unit 303 with the information that generates.
Same with the high order bit sending controling unit 104 (Fig. 1) of execution mode 1, high order bit sending controling unit 302 is set the transmission of the high order bit of CQI longer at interval than the transmission of the low-order bit of CQI at interval.In addition, high order bit sending controling unit 302 determines the delivery time of the high order bit of CQI based on the represented communication zero hour of information from 301 inputs of timing generation unit.
Low-order bit sending controling unit 303 is same with high order bit sending controling unit 302, based on the represented communication zero hour of information from 301 inputs of timing generation unit, and the delivery time of the low-order bit of decision CQI.
Then, specify the high order bit sending controling unit 302 of dispensing device 300 and the transmission control and treatment in the low-order bit sending controling unit 303.
In following explanation, same with execution mode 1, the bit number of supposing CQI is 5 bits, is high order bit from highest order 3 bits in 5 bits, is low-order bit from lowest order 2 bits.In addition,, be Fig. 2 and moment n shown in Figure 7 communication zero hour of supposing dispensing device 300 here.In addition, same with execution mode 1 like Fig. 2 and shown in Figure 7, time interval 2n is adopted in the transmission of a high position 3 bits of CQI at interval, and time interval n is adopted in the transmission of low level 2 bits of CQI at interval.That is, the transmission of a high position 3 bits of CQI is spaced apart the transmission twice at interval of low level 2 bits of CQI.
Below, the communication sending method 1 and 2 of CQI of the zero hour is described.
< sending method 1 >
In this sending method, dispensing device 300 sends high order bit and the low-order bit of CQI, i.e. whole bits of CQI the zero hour in communication.
Particularly, as shown in Figure 2, high order bit sending controling unit 302 will be that each of 2n determines the delivery time into a high position 3 bits of CQI constantly in the n time interval zero hour from communication.That is, as shown in Figure 2, high order bit sending controling unit 302 constantly n, 3n ... determine delivery time into a high position 3 bits of CQI.
In addition, as shown in Figure 2, low-order bit sending controling unit 303 will be that each of n determines the delivery time into low level 2 bits of CQI constantly in the n time interval zero hour from communication.That is, as shown in Figure 2, low-order bit sending controling unit 303 constantly n, 2n, 3n, 4n ... determine delivery time into low level 2 bits of CQI.
That is, as shown in Figure 2, dispensing device 300 (transmitting element 107) sends whole bits (5 bit) of CQI at the communication zero hour of from the information of timing generation unit 301 inputs, representing (n constantly).
Here, have line error in the actual circuit, therefore if among the CQI that sends from dispensing device 300, producing line error, then receiving system (base station) possibly selected the different transmission rate of transmission rate with dispensing device 300 requests.Therefore, the selection mistake of the transmission rate that causes for fear of the line error by CQI is considered receiving system carries out multiple averaging to CQI method.But when the communication beginning, the reception sample number of the CQI in the receiving system is less.Particularly, the transmission of the high order bit of CQI is longer at interval than the transmission of low-order bit at interval, and the sample number of the high order bit of CQI tails off, and therefore can't obtain the equalization effect of CQI, and the probability of the selection mistake of transmission rate is high.
But, in this sending method, to communicate by letter the zero hour, dispensing device 300 sends whole bits of CQI, and receiving system can use whole bits of CQI thus.Therefore, according to this sending method, can prevent the probability height of the selection mistake of transmission rate.In addition, same with execution mode 1 according to this sending method, the amount of information of CQI reduces, and therefore can reduce the power consumption of CQI, and can reduce the interference volume to other-end by the CQI generation.
In addition, in this sending method, the situation that dispensing device 300 sends whole bits of CQI the zero hour in communication has been described.But in the present invention, the moment of sending whole bits of CQI is not limited to the zero hour of communicating by letter.For example, also can change the fireballing moment at circuit, i.e. in the violent moment of the variation of the value of CQI, dispensing device sends whole bits of CQI.
< sending method 2 >
In this sending method, dispensing device 300 only sends the high order bit of CQI the zero hour in communication.
Particularly, as shown in Figure 7, same with sending method 1 (Fig. 2), high order bit sending controling unit 302 will be that each of 2n determines the delivery time into a high position 3 bits of CQI constantly from the communication n time interval zero hour.That is, as shown in Figure 7, high order bit sending controling unit 302 constantly n, 3n ... determine delivery time into a high position 3 bits of CQI.
Relative therewith, as shown in Figure 7, low-order bit sending controling unit 303 will be that each of n determines the delivery time into low level 2 bits of CQI constantly from the moment 2n time interval.That is, as shown in Figure 7, low-order bit sending controling unit 303 constantly 2n, 3n, 4n ... determine delivery time into low level 2 bits of CQI.That is, low-order bit sending controling unit 303 will not communicated by letter zero hour n as the delivery time of low level 2 bits of CQI.
That is, as shown in Figure 7, dispensing device 300 (transmitting element 107) only sends the high order bit (high-order 3 bits) of CQI at the communication zero hour of from the information of timing generation unit 301 inputs, representing (n constantly).
Therefore, in communication zero hour (moment n shown in Figure 7), receiving system only receives a high position 3 bits among the CQI of 5 bits.That is, in the CQI that communication is received by receiving system the zero hour, and compare, produce the error of low level 2 bits that are equivalent to CQI by the value of whole bits (5 bit) expression of CQI (CQI of the reality that generates by CQI generation unit 102).
But the low-order bit of CQI is low more in a plurality of bits of expression CQI, and the value that can represent is more little.Therefore, the error of low level 2 bits of CQI is little to the influence that the whole value of CQI produces.In other words, receiving system can be confirmed the rough value of CQI through receive a high position 3 bits of CQI the zero hour in communication.Therefore,, and can't confirm the correct value of CQI, can use a high position 3 bits (the general value of CQI) of CQI, roughly correctly select transmission rate though receiving system does not receive low level 2 bits of CQI the zero hour in communication.
Like this, according to this sending method, dispensing device 300 only sends the high order bit of CQI the zero hour in communication, therefore compares the amount of information that can further reduce CQI with execution mode 1.In addition, communicating by letter the zero hour, though receiving system can't be confirmed correct CQI, can confirm the value of rough CQI, thereby roughly correctly select transmission rate.Therefore, according to this sending method, can not reduce throughput and further reduce the amount of information of CQI.
More than, the sending method 1 and 2 of the CQI of communication zero hour has been described.
Like this,, determine the zero hour based on communication under the situation of delivery time of CQI at dispensing device according to this execution mode, same with execution mode 1, can not reduce throughput and reduce the amount of information of CQI (signal is used in the transmission rate request).
(execution mode 4)
In this execution mode, dispensing device sends whole bits of CQI in the moment of the most significant bit variation of CQI.
In a plurality of bits of expression CQI, the value that most significant bit can be represented is maximum.In addition, in the moment that the most significant bit of CQI changes, the possibility that the whole bits beyond the highest order of CQI change is high.For example, in the CQI of 5 bits, after CQI=" 01111 " rises a value, become " 10000 ", the most significant bit of CQI is changed to " 1 " from " 0 ", and the whole bits beyond the most significant bit of CQI are changed to " 0000 " from " 1111 " simultaneously.CQI also is same from the situation that " 10000 " are changed to " 01111 ".
Here; As stated; When dispensing device was set the transmission of the high order bit of CQI longer at interval than the transmission of the low-order bit of CQI at interval, the most significant bit of the CQI that might generate in the moment beyond the delivery time of the high order bit of CQI changed from the most significant bit of the CQI that generated last time.That is,, also might not send the most significant bit of CQI moment that the most significant bit of CQI changes (being the moment that the whole bits beyond the most significant bit of CQI possibly change).In this case, receiving system is confirmed as the CQI that receives and the actual diverse value of CQI, thereby selects the transmission rate different with the transmission rate of dispensing device actual request.
Therefore, in this execution mode, dispensing device sends whole bits of CQI in the moment of the most significant bit variation of CQI.
Fig. 8 representes the structure of the dispensing device 400 in this execution mode.In Fig. 8, to additional same numeral of the structure identical and omission explanation with execution mode 1 (Fig. 1).
In dispensing device shown in Figure 8 400, identifying unit 401 uses the CQI that imports successively from CQI generation unit 102, judges whether the value of expression most significant bit in a plurality of bits of CQI changes.And identifying unit 401 is indicated to send the high order bit of CQI high order bit sending controling unit 402 under the situation that the value of the most significant bit that is judged to be CQI has changed.
Same with the high order bit sending controling unit 104 (Fig. 1) of execution mode 1, high order bit sending controling unit 402 is set the transmission of the high order bit of CQI longer at interval than the transmission of the low-order bit of CQI at interval.And then under the situation of the transmission of the high order bit of having indicated CQI sometime from identifying unit 401, high order bit sending controling unit 402 will be somebody's turn to do decision constantly and be the delivery time of the high order bit of CQI.
That is, dispensing device 400 (transmitting element 107) must send the high order bit of CQI in the moment of the value variation of the most significant bit of CQI.Thus, receiving system can receive whole bits of CQI in the moment of the most significant bit variation of CQI.That is, in the moment that the most significant bit of CQI changes, receiving system can use the CQI that has reflected up-to-date line conditions, selects suitable transmission rate reliably.
In addition, when dispensing device 400 has changed at the most significant bit of CQI, need the notice receiving system: how the transmission that the high order bit of CQI is set all sends whole bits of CQI at interval.Therefore, dispensing device 400 sends to receiving system and is used to represent whether the most significant bit of CQI has changed the control information (not shown) of (whether the moment beyond the delivery time that the high order bit of CQI is set sends whole bits of CQI).But this control information can have unconverted 1 bit (" 0 " is " 1 " perhaps) to represent with the most significant bit of expression CQI, therefore can the increase of amount of information be suppressed to Min..That is, same with execution mode 2, the transmission of the high order bit of dispensing device 400 through suitably setting CQI at interval, the amount of information that increases CQI reduces effect, can reduce the influence of the performance degradation that the amount of information increase of control information causes thus.
Like this, according to this execution mode, dispensing device sends whole bits of CQI in the moment of the most significant bit variation of CQI.Thus, even in the moment that the most significant bit of CQI changes, receiving system also can receive the CQI of correct value, therefore can prevent to select by error the transmission rate different with the transmission rate of dispensing device actual request.In addition, according to this execution mode, the moment beyond the moment that the most significant bit of CQI changes, same with execution mode 1, can not reduce throughput and further reduce the amount of information of CQI.
More than each execution mode of the present invention is illustrated.
In addition; In the present invention; Situation that dispensing device for example can change to good direction according to line conditions and line conditions be to the situation that inferior direction changes, set respectively CQI high order bit transmission at interval and the transmission of the low-order bit of CQI at interval.For example, dispensing device in line conditions under the situation that inferior direction changes, as shown in Figure 2, the transmission of the high order bit of CQI is set at interval the transmission twice at interval of the low-order bit of CQI.On the other hand, dispensing device in line conditions under the situation that good direction changes, as shown in Figure 4, the transmission of the high order bit of CQI is set at interval at interval three times of transmission of the low-order bit of CQI.That is, the transmission of the high order bit of the CQI of line conditions under the transmission situation that good direction changes than line conditions at interval of the high order bit of the CQI under the situation that inferior direction changes is short at interval.Thus, under the situation that inferior direction changes, the line error of CQI can be prevented to produce, extra repeating transmission can be prevented to produce in line conditions.Relative therewith, under the situation that good direction changes, can further reduce the amount of information of CQI in line conditions.
In addition, in the present invention, dispensing device also can to each subcarrier set CQI high order bit transmission at interval and the transmission of the low-order bit of CQI at interval.For example; Under the situation of the multi-carrier communication mode of using ofdm communication mode etc.; Dispensing device (being the OFDM dispensing device) is a plurality of sub carrier groups with a plurality of subcarrier packet, can to each sub carrier groups set CQI high order bit transmission at interval and the transmission of the low-order bit of CQI at interval.For example; Dispensing device is in sub carrier groups #1 shown in Figure 5, and is as shown in Figure 2, the transmission of the high order bit of CQI is set at interval the transmission twice at interval of the low-order bit of CQI; On the other hand; In sub carrier groups #2 shown in Figure 5, as shown in Figure 4, the transmission of the high order bit of CQI is set at interval at interval three times of transmission of the low-order bit of CQI.Like this, dispensing device is set suitable transmission at interval independently to each subcarrier, reduces the amount of information of the CQI in each subcarrier thus, therefore can reduce the power consumption of CQI, and can reduce the interference volume to other-end by the CQI generation.
In addition, in this execution mode, under the situation of using the MIMO communication mode, dispensing device also can to each transmitting antenna set CQI high order bit transmission at interval and the transmission of the low-order bit of CQI at interval.The dispensing device (not shown) of a plurality of transmitting antennas with transmitting antenna 1 and transmitting antenna 2 for example, is described.Dispensing device is in transmitting antenna 1; As shown in Figure 2; The transmission of the high order bit of CQI is set at the transmission twice at interval of the low-order bit of CQI at interval, on the other hand, in transmitting antenna 2; As shown in Figure 4, the transmission of the high order bit of CQI is set at interval at interval three times of transmission of the low-order bit of CQI.Like this, dispensing device is set suitable transmission at interval independently to each transmitting antenna, thereby reduces the amount of information of the CQI in each transmitting antenna, therefore can reduce the power consumption of CQI, and can reduce the interference volume to other-end by the CQI generation.
In addition, in this execution mode, dispensing device can only send the high order bit of CQI the specific moment as shown in Figure 9 (being moment 3n) in Fig. 9.Through only sending the high order bit of CQI in specific moment, can further reduce the amount of information of CQI, can further reduce the power consumption of CQI and to the interference volume of other-end.In addition; Dispensing device also can only only send the high order bit of CQI in the particular subcarriers group under the situation of multi-carrier communication modes such as use ofdm communication mode, under the situation of using the MIMO communication mode, also can only in specific transmitting antenna, only send the high order bit of CQI.
In addition, in the present invention, the dispensing device in the above-mentioned execution mode can be communication terminal or base station apparatus.Thus, can realization obtain and the above-mentioned same effect and communication terminal, base station apparatus or the GSM of effect.
The spy who submits on April 30th, 2009 is willing to the specification that comprises in 2009-110931 number the Japanese patent application, the disclosure of drawing and description summary, is fully incorporated in the application.
Industrial applicibility
The present invention can be applicable to and use dispensing device and the sending method etc. that makes the communication mode of variable link circuit self-adapting such as encoding rate or modulation system (link adaptation) according to line quality etc.
Claims (12)
1. dispensing device comprises:
Control unit sends the 1st of the high order bit of control signal and sets to such an extent that send long at interval than the 2nd of the low-order bit of said control signal at interval; And
Transmitting element sends at interval based on said the 1st transmission interval of setting and the said the 2nd, sends said control signal.
2. dispensing device as claimed in claim 1,
Said control unit is further set the said the 1st changeably and is sent at interval.
3. dispensing device as claimed in claim 2,
Said transmitting element sends the signal that is used to represent whether send the high order bit of said control signal.
4. dispensing device as claimed in claim 1,
Situation that said control unit changes to good direction according to line conditions and line conditions be to the situation that inferior direction changes, and sets the said the 1st respectively and send at interval and the said the 2nd send at interval.
5. dispensing device as claimed in claim 1,
Said control unit is set the said the 1st to each subcarrier and is sent at interval and said the 2nd transmission interval.
6. dispensing device as claimed in claim 1 also comprises:
A plurality of antennas,
Said control unit sends at interval each antenna settings in said a plurality of antennas the said the 1st and said the 2nd transmission interval.
7. dispensing device as claimed in claim 1,
Said transmitting element sends whole bits of said control signal the zero hour in communication.
8. dispensing device as claimed in claim 1,
Said transmitting element only sends the high order bit of said control signal the zero hour in communication.
9. dispensing device as claimed in claim 1,
Said transmitting element sends whole bits of said control signal in the moment of the most significant bit variation of said control signal.
10. dispensing device as claimed in claim 1,
Said dispensing device has been to use the dispensing device of OFDM communications mode.
11. dispensing device as claimed in claim 1,
Said dispensing device is communication terminal or base station apparatus.
12. sending method comprises:
The 1st of the high order bit of control signal sent set to such an extent that send long at interval at interval than the 2nd of the low-order bit of said control signal; And
Send at interval at said the 1st transmission interval and the said the 2nd based on setting, sends said control signal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009110931A JP2010263308A (en) | 2009-04-30 | 2009-04-30 | Transmission device and transmission method |
| JP2009-110931 | 2009-04-30 | ||
| PCT/JP2010/003066 WO2010125820A1 (en) | 2009-04-30 | 2010-04-28 | Transmission device and transmission method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102428666A true CN102428666A (en) | 2012-04-25 |
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| CN2010800179280A Pending CN102428666A (en) | 2009-04-30 | 2010-04-28 | Transmission device and transmission method |
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| US (1) | US20120051455A1 (en) |
| JP (1) | JP2010263308A (en) |
| CN (1) | CN102428666A (en) |
| WO (1) | WO2010125820A1 (en) |
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| JP5874002B2 (en) * | 2011-11-10 | 2016-03-01 | パナソニックＩｐマネジメント株式会社 | Transmitting apparatus and transmitting method |
| JP6108082B2 (en) * | 2013-03-01 | 2017-04-05 | パナソニックＩｐマネジメント株式会社 | COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND TRANSMISSION METHOD |
| TW201806349A (en) * | 2016-08-10 | 2018-02-16 | Idac控股公司 | Methods for flexible reference signal transmission with single carrier frequency domain multiple access (SC-FDMA) and OFDMA |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768497A (en) * | 2003-04-04 | 2006-05-03 | 松下电器产业株式会社 | Base station device and communication method |
| WO2007148586A1 (en) * | 2006-06-19 | 2007-12-27 | Ntt Docomo, Inc. | Mobile station device, base station device, and uplink scheduling request transmission method |
| CN101352073A (en) * | 2005-10-27 | 2009-01-21 | 高通股份有限公司 | Method and apparatus of transmission of an access probe in a wireless communication systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5335442A (en) * | 1976-09-14 | 1978-04-01 | Nippon Signal Co Ltd:The | Transmission and reception method and unit for address signal |
| JPH05181764A (en) * | 1991-12-27 | 1993-07-23 | Nec Corp | Information processing system |
| KR100605973B1 (en) * | 2000-06-27 | 2006-07-28 | 삼성전자주식회사 | Method and apparatus for link adaptation in mobile communication system |
| WO2002012915A1 (en) * | 2000-08-09 | 2002-02-14 | Fujitsu Limited | Radar video transmission system |
| JP2007049406A (en) * | 2005-08-09 | 2007-02-22 | Sanyo Electric Co Ltd | Transmission method and apparatus, reception method and apparatus, and communication system utilizing the same |
| US8073063B2 (en) * | 2005-08-23 | 2011-12-06 | Nortel Networks Limited | Methods and systems for orthogonal frequency division multiplexing (OFDM) multiple zone partitioning |
| JP4824612B2 (en) * | 2007-03-20 | 2011-11-30 | 株式会社エヌ・ティ・ティ・ドコモ | Communication system, user apparatus and transmission method |
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2009
- 2009-04-30 JP JP2009110931A patent/JP2010263308A/en active Pending
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2010
- 2010-04-28 CN CN2010800179280A patent/CN102428666A/en active Pending
- 2010-04-28 WO PCT/JP2010/003066 patent/WO2010125820A1/en active Application Filing
- 2010-04-28 US US13/266,424 patent/US20120051455A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1768497A (en) * | 2003-04-04 | 2006-05-03 | 松下电器产业株式会社 | Base station device and communication method |
| CN101352073A (en) * | 2005-10-27 | 2009-01-21 | 高通股份有限公司 | Method and apparatus of transmission of an access probe in a wireless communication systems |
| WO2007148586A1 (en) * | 2006-06-19 | 2007-12-27 | Ntt Docomo, Inc. | Mobile station device, base station device, and uplink scheduling request transmission method |
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| US20120051455A1 (en) | 2012-03-01 |
| WO2010125820A1 (en) | 2010-11-04 |
| JP2010263308A (en) | 2010-11-18 |
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